Assembly for the Temporary Attachment of a Vertical Masonry Guide to the Inner Leaf of a Cavity Wall

ABSTRACT

Assembly for temporarily attaching a vertical masonry guide to an inner leaf of a cavity wall during laying of the bricks of an outer leaf of a cavity wall, comprising an inner leaf attaching part for attaching the assembly to the inner leaf, a masonry guide attaching part for attaching the assembly to the masonry guide, and a connecting part for mutually connecting the inner leaf attaching part and the masonry guide attaching part.

The invention relates to an assembly for temporarily attaching avertical masonry guide to an inner leaf of a cavity wall during layingof the bricks of an outer leaf of a cavity wall.

During the laying of the outer leaf of a cavity wall by means of bricksand mortar wooden masonry guides (battens) are usually attachedvertically to the inner leaf close to the corners. These masonry guidesserve for level tensioning of horizontal wires along which the upper rowof fresh bricks is laid. A known assembly for this purpose consists ofseveral wooden battens and nails with which the masonry guide is fixedto the inner leaf. Arranging these masonry guides in this way istime-consuming. Long masonry guides are therefore used so that they donot, or less frequently, have to be adjusted in the height. Theattaching means for the masonry guides also get in the way during thebricklaying.

The invention has for its object to provide an assembly with which thearranging and removal of the masonry guides becomes less time-consuming,with which material and waste can be saved, with which the bricklayer isimpeded less during the bricklaying, a better quality of brickwork canbe obtained and/or the bricklaying requires less time.

The assembly according to the invention comprises for this purpose aninner leaf attaching part for attaching the assembly to the inner leaf,a masonry guide attaching part for attaching the assembly to the masonryguide, and a connecting part for mutually connecting the inner leafattaching part and the masonry guide attaching part. The inner leafattaching part and the masonry guide attaching part are here preferablyconnected releasably to each other. The bricklayer can hereby firstarrange the inner leaf attaching part on the inner leaf by means ofnails or screws, and then arrange in simple manner the masonry guideattaching part co-acting therewith with the connecting parttherebetween, and arrange the masonry guide thereon.

The inner leaf attaching part preferably comprises a support surfaceadapted to lie against the vertical inner leaf over a vertical distanceof at least 3 cm, the masonry guide attaching part preferably comprisesa support surface adapted to lie against the vertical masonry guide overa vertical distance of at least 3 cm, and the connecting part preferablyhas a joint bridging part with a length perpendicularly of the flatsupport surface of the inner attaching part of at least 7 cm where thethickness of the connecting part is a maximum of 1 cm. The jointbridging part is hereby no higher than a standard bed joint, whereby itcan remain in place during bricklaying and will form part of the bedjoint.

The inner leaf attaching part and the joint bridging part are preferablyconnected releasably to each other. The inner leaf attaching part andthe joint bridging part are preferably also mutually connected forsliding relative to each other, wherein sliding is possible in thedirection perpendicularly of the plane of the joint bridging part. Theinner leaf attaching part and the joint bridging part are preferablyalso releasably connected to each other here by means of an inner leafattaching slide part which forms on the one hand a slidable dovetailconnection with the inner leaf attaching part and has on the other anengaging part on which the joint bridging part can be mounted, forinstance by means of screws. It is hereby possible to mount the innerleaf attaching part with a margin at the correct location on the innerleaf, after which the joint bridging part can be displaced downwardalong the inner leaf attaching part onto the upper row of bricks.

The masonry guide attaching part and the joint bridging part arepreferably also connected releasably to each other. The masonry guideattaching part and the joint bridging part are here preferably mutuallyconnected for sliding relative to each other, wherein sliding ispossible in the direction lying perpendicularly of the plane of thejoint bridging part. The masonry guide attaching part and the jointbridging part are here preferably also connected releasably to eachother by means of a masonry guide attaching slide part which forms onthe one hand a slidable dovetail connection with the masonry guideattaching part and has on the other an engaging part on which the jointbridging part can be mounted, for instance by means of a wedge. It ishereby possible, once a lower and upper assembly have been arrangedroughly at the correct location on the inner leaf and upper and lowermasonry guide attaching parts have been mounted at roughly the correctlocation on the masonry guide, to slide the masonry guide in verticaldirection in the masonry guide attaching slide parts. Once a row ofbricks has been laid over the upper joint bridging part, the masonryguide can also be removed in simple manner by sliding it in verticaldirection out of the masonry guide slide parts. The upper assembly isthen used as lower assembly, and a new upper assembly is attached to theinner leaf, after which the masonry guide with the two masonry guideattaching parts is slid into these two assemblies. A relatively shortmasonry guide can hereby be used repeatedly as the brickwork of theouter leaf increases in height.

The joint bridging part preferably extends such that the line betweenthe support surfaces of the inner leaf attaching part and the masonryguide attaching part extends at an angle of about 45 degrees to thesupport surface of the inner leaf attaching part, whereby the masonryguide can extend on the corners of the outer leaves.

The joint bridging part preferably has on the part with a thickness of amaximum of 1 cm a weakened portion close to the masonry guide attachingpart such that it can be broken away with little force at this positionalong the weakened portion. Once it has been broken off, the brokensurface of the joint bridging part disappears from sight during groutingof the outer leaf.

In the preferred method according to the invention the inner leafattaching part is for instance fixed against the inner leaf by means oftwo drive plugs. The inner leaf attaching slide part is then slid bymeans of the dovetail connection over the inner leaf attaching part. Theconnecting part/joint bridging part is then connected, for instance bymeans of the wedge, to the masonry guide attaching slide part (and thefirst time also to the masonry guide attaching part pushed therein).This sub-assembly is then screwed onto the inner leaf attaching part,for which purpose the inner leaf attaching slide part is provided withtwo screw slots at a right angle to each other so that the sub-assemblycan be set in the correct position for a vertical position of themasonry guide by means of sliding the screws in the screw slots. Themasonry guide is subsequently fixed, for instance by means of screws, tothe masonry guide attaching parts (on following occasions the masonryguide with the masonry guide attaching parts fixed thereto is slidsimply into the masonry guide attaching slide parts). If the upper rowof laid bricks is situated directly below a joint bridging part, thejoint bridging part is slid downward until it rests on the upper row oflaid bricks of the outer leaf, so that the joint bridging part can belaid in the bed joint below the following row of bricks.

The masonry guide with the masonry guide attaching parts fixed theretois then removed vertically from the masonry guide attaching slide partsand used again in a following higher position. The lower masonry guideattaching slide part is removed from the connecting part/joint bridgingpart, for instance by knocking out the wedge. This masonry guideattaching slide part can in this way also be reused. The connecting partis broken off at the position of the joint bridging part.

The invention will be further elucidated on the basis of an embodimentof the assembly shown in the figures, in which:

FIG. 1 is a perspective view of two assemblies according to theinvention in the intended application; and

FIG. 2 is a top view of an assembly according to the invention.

A cavity wall comprises an inner leaf 10, insulation material 13 and abrickwork outer leaf 11. According to the figures the assembly forattaching the vertical masonry guide 12 successively comprises, as seenfrom inner leaf 10, an inner leaf attaching part 6, an inner leafattaching slide part 5, a connecting part/joint bridging part 1, amasonry guide attaching slide part 2 and a masonry guide attaching part4. The vertical masonry guide 12 is mounted on the masonry guideattaching part 4 in the above described manner in order to enable layingof the bricks of outer leaf 11 of the cavity wall along a wire tensionedhorizontally thereon.

The inner leaf attaching part 6 consists of a rectangular verticalplastic plate on one side of which are situated two protruding verticaldovetail tracks. Holes run through the dovetail tracks and the plate sothat this part can be fixed by means of drive plugs 61, 62 against innerleaf 10.

The inner leaf attaching slide part 5 consists of an angular plasticplate with a vertical part and a horizontal part, with two dovetailgrooves in the vertical part which can co-act with the dovetail tracksof the inner leaf attaching part 4. The horizontal part comprises twoscrew holes.

The connecting part/joint bridging part 1 consists of a plastic platesubstantially in the form of a parallelogram, from which the middle partis cut away. The acute angle of the parallelogram is about 45 degrees.The thickness of the plate is a maximum of 1 cm. The plate is providedon one side with two screw slots 13, 14 at a right angle to each otherso that this side can be fastened by means of screws 15, 16 in the screwholes of the horizontal part of inner leaf slide part 5 and can here beset in a correct position. On the opposite side the plate is providedwith a slot-like hole for receiving wedge 3. The joint bridging part isprovided with a weakened portion close to the outer side of the outerleaf so that it can be easily broken away at that position.

The masonry guide attaching slide part 2 comprises a plastic plate bentsubstantially in a U-shape. In the horizontal bent outer end of theplate is situated a vertical dovetail groove. Both legs of the U-shapedplate are provided with slot-like holes for receiving wedge 3.Connecting part 1 can slide in between the legs of masonry guideattaching slide part 2 and be secured by means of wedge 3.

The masonry guide attaching part 4 comprises a rectangular verticalplastic plate, on one side of which is situated a protruding verticaldovetail track. Screw holes run through the dovetail track and the plateso that this part can be fastened by means of screws 41, 42 againstmasonry guide 12. The plate is provided with a vertical bent edge sothat it can easily be placed in the correct manner against masonry guide12.

1-13. (canceled)
 14. A connecting part for temporarily attaching amasonry guide to brickwork, wherein the connecting part comprises ajoint bridging part no higher than a bed joint that can remain in placeduring bricklaying and will form part of the bed joint, and wherein theconnecting part is provided with a weakened portion so that it can beeasily broken off at the position of the joint bridging part.
 15. Theconnecting part according to claim 14, wherein the weakened portion isconfigured to lie within the bed joint.
 16. The connecting according toclaim 14, wherein the connecting part consists of a plastic plate. 17.The connecting part according to claim 16, wherein the middle part ofthe plastic plate is cut away.
 18. The connecting part according toclaim 16, wherein the plastic plate is provided with a slot-like hole.19. The connecting part according to claim 14, wherein the thickness ofthe joint bridging part is a maximum of 1 cm.
 20. The connecting partaccording to claim 14, wherein the joint bridging part has a length atleast 7 cm.
 21. The connecting part according to claim 14, wherein theconnecting part is configured for releasable connection to a masonryguide attaching part.